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2008-08-17 Paleontology (Dinosaurs) - apatosaurus: Hi Jennifer! I'm afraid nobody knows what colour Apatosaurus was, since skin colouration does not survive the fossilisation process. It was at least fairly abundant, however, since skeletons of this...
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2008-08-17 Paleontology (Dinosaurs) - apatosaurus: I'm afraid it's impossible to tell what color they were. They could have been gray or green, since they didn't need any camouflage. However, they also could have had bright colors in order to attract mates...
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2008-08-16 Paleontology (Dinosaurs) - dimetrodon: Well, the most specific traits are some small details about the shape of the forearms, hips, shins, and ankles. Archaeopteryx, is, technically, a dinosaur. It's just like all the other birds. Dimetrodon...
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2008-08-16 Paleontology (Dinosaurs) - dimetrodon: The word "dinosaur" refers to a specific group of animals, which did not include Dimetrodon. Calling Dimetrodon a dinosaur would be like calling a crocodile a mammal - it just wasn't part of that group...
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2008-08-15 Metallurgy - hardness 17-4 stainless Cond H-900: The typical hardness of 17-4PH in the H900 age hardened condition is 41~46HRC (with 42~45HRC as a narrower range). The H900 heat treatment results in the peak hardness of 17-4PH. Hardness of 17-4PH...
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